Re: [PATCH v2 2/9] iio: imu: adis16400: initialize adis_data statically

From: Jonathan Cameron
Date: Fri Feb 14 2020 - 09:29:30 EST

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In reply to: Alexandru Ardelean: "[PATCH v2 2/9] iio: imu: adis16400: initialize adis_data statically"
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On Mon, 10 Feb 2020 15:25:59 +0200
Alexandru Ardelean <alexandru.ardelean@xxxxxxxxxx> wrote:

> This change overrides commit 380b107bbf944 ("iio: adis: Introduce timeouts
> structure"). It removes the memory allocation and moves the 'adis_data'
> information to be static on the chip_info struct.
>
> This also adds a timeout structure to ADIS16334, since it was initially
> omitted. This was omitted (by accident) when the change was done.
>
> Signed-off-by: Alexandru Ardelean <alexandru.ardelean@xxxxxxxxxx>
Applied. Thanks,

Jonathan

> ---
> drivers/iio/imu/adis16400.c | 139 ++++++++++++++++--------------------
> 1 file changed, 63 insertions(+), 76 deletions(-)
>
> diff --git a/drivers/iio/imu/adis16400.c b/drivers/iio/imu/adis16400.c
> index cfb1c19eb930..1c0770e03ec9 100644
> --- a/drivers/iio/imu/adis16400.c
> +++ b/drivers/iio/imu/adis16400.c
> @@ -156,7 +156,7 @@ struct adis16400_state;
>
> struct adis16400_chip_info {
> const struct iio_chan_spec *channels;
> - const struct adis_timeout *timeouts;
> + const struct adis_data adis_data;
> const int num_channels;
> const long flags;
> unsigned int gyro_scale_micro;
> @@ -930,12 +930,63 @@ static const struct iio_chan_spec adis16334_channels[] = {
> IIO_CHAN_SOFT_TIMESTAMP(ADIS16400_SCAN_TIMESTAMP),
> };
>
> +static const char * const adis16400_status_error_msgs[] = {
> + [ADIS16400_DIAG_STAT_ZACCL_FAIL] = "Z-axis accelerometer self-test failure",
> + [ADIS16400_DIAG_STAT_YACCL_FAIL] = "Y-axis accelerometer self-test failure",
> + [ADIS16400_DIAG_STAT_XACCL_FAIL] = "X-axis accelerometer self-test failure",
> + [ADIS16400_DIAG_STAT_XGYRO_FAIL] = "X-axis gyroscope self-test failure",
> + [ADIS16400_DIAG_STAT_YGYRO_FAIL] = "Y-axis gyroscope self-test failure",
> + [ADIS16400_DIAG_STAT_ZGYRO_FAIL] = "Z-axis gyroscope self-test failure",
> + [ADIS16400_DIAG_STAT_ALARM2] = "Alarm 2 active",
> + [ADIS16400_DIAG_STAT_ALARM1] = "Alarm 1 active",
> + [ADIS16400_DIAG_STAT_FLASH_CHK] = "Flash checksum error",
> + [ADIS16400_DIAG_STAT_SELF_TEST] = "Self test error",
> + [ADIS16400_DIAG_STAT_OVERFLOW] = "Sensor overrange",
> + [ADIS16400_DIAG_STAT_SPI_FAIL] = "SPI failure",
> + [ADIS16400_DIAG_STAT_FLASH_UPT] = "Flash update failed",
> + [ADIS16400_DIAG_STAT_POWER_HIGH] = "Power supply above 5.25V",
> + [ADIS16400_DIAG_STAT_POWER_LOW] = "Power supply below 4.75V",
> +};
> +
> +#define ADIS16400_DATA(_timeouts) \
> +{ \
> + .msc_ctrl_reg = ADIS16400_MSC_CTRL, \
> + .glob_cmd_reg = ADIS16400_GLOB_CMD, \
> + .diag_stat_reg = ADIS16400_DIAG_STAT, \
> + .read_delay = 50, \
> + .write_delay = 50, \
> + .self_test_mask = ADIS16400_MSC_CTRL_MEM_TEST, \
> + .status_error_msgs = adis16400_status_error_msgs, \
> + .status_error_mask = BIT(ADIS16400_DIAG_STAT_ZACCL_FAIL) | \
> + BIT(ADIS16400_DIAG_STAT_YACCL_FAIL) | \
> + BIT(ADIS16400_DIAG_STAT_XACCL_FAIL) | \
> + BIT(ADIS16400_DIAG_STAT_XGYRO_FAIL) | \
> + BIT(ADIS16400_DIAG_STAT_YGYRO_FAIL) | \
> + BIT(ADIS16400_DIAG_STAT_ZGYRO_FAIL) | \
> + BIT(ADIS16400_DIAG_STAT_ALARM2) | \
> + BIT(ADIS16400_DIAG_STAT_ALARM1) | \
> + BIT(ADIS16400_DIAG_STAT_FLASH_CHK) | \
> + BIT(ADIS16400_DIAG_STAT_SELF_TEST) | \
> + BIT(ADIS16400_DIAG_STAT_OVERFLOW) | \
> + BIT(ADIS16400_DIAG_STAT_SPI_FAIL) | \
> + BIT(ADIS16400_DIAG_STAT_FLASH_UPT) | \
> + BIT(ADIS16400_DIAG_STAT_POWER_HIGH) | \
> + BIT(ADIS16400_DIAG_STAT_POWER_LOW), \
> + .timeouts = (_timeouts), \
> +}
> +
> static const struct adis_timeout adis16300_timeouts = {
> .reset_ms = ADIS16400_STARTUP_DELAY,
> .sw_reset_ms = ADIS16400_STARTUP_DELAY,
> .self_test_ms = ADIS16400_STARTUP_DELAY,
> };
>
> +static const struct adis_timeout adis16334_timeouts = {
> + .reset_ms = 60,
> + .sw_reset_ms = 60,
> + .self_test_ms = 14,
> +};
> +
> static const struct adis_timeout adis16362_timeouts = {
> .reset_ms = 130,
> .sw_reset_ms = 130,
> @@ -972,7 +1023,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
> .temp_offset = 25000000 / 140000, /* 25 C = 0x00 */
> .set_freq = adis16400_set_freq,
> .get_freq = adis16400_get_freq,
> - .timeouts = &adis16300_timeouts,
> + .adis_data = ADIS16400_DATA(&adis16300_timeouts),
> },
> [ADIS16334] = {
> .channels = adis16334_channels,
> @@ -985,6 +1036,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
> .temp_offset = 25000000 / 67850, /* 25 C = 0x00 */
> .set_freq = adis16334_set_freq,
> .get_freq = adis16334_get_freq,
> + .adis_data = ADIS16400_DATA(&adis16334_timeouts),
> },
> [ADIS16350] = {
> .channels = adis16350_channels,
> @@ -996,7 +1048,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
> .flags = ADIS16400_NO_BURST | ADIS16400_HAS_SLOW_MODE,
> .set_freq = adis16400_set_freq,
> .get_freq = adis16400_get_freq,
> - .timeouts = &adis16300_timeouts,
> + .adis_data = ADIS16400_DATA(&adis16300_timeouts),
> },
> [ADIS16360] = {
> .channels = adis16350_channels,
> @@ -1009,7 +1061,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
> .temp_offset = 25000000 / 136000, /* 25 C = 0x00 */
> .set_freq = adis16400_set_freq,
> .get_freq = adis16400_get_freq,
> - .timeouts = &adis16300_timeouts,
> + .adis_data = ADIS16400_DATA(&adis16300_timeouts),
> },
> [ADIS16362] = {
> .channels = adis16350_channels,
> @@ -1022,7 +1074,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
> .temp_offset = 25000000 / 136000, /* 25 C = 0x00 */
> .set_freq = adis16400_set_freq,
> .get_freq = adis16400_get_freq,
> - .timeouts = &adis16362_timeouts,
> + .adis_data = ADIS16400_DATA(&adis16362_timeouts),
> },
> [ADIS16364] = {
> .channels = adis16350_channels,
> @@ -1035,7 +1087,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
> .temp_offset = 25000000 / 136000, /* 25 C = 0x00 */
> .set_freq = adis16400_set_freq,
> .get_freq = adis16400_get_freq,
> - .timeouts = &adis16362_timeouts,
> + .adis_data = ADIS16400_DATA(&adis16362_timeouts),
> },
> [ADIS16367] = {
> .channels = adis16350_channels,
> @@ -1048,7 +1100,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
> .temp_offset = 25000000 / 136000, /* 25 C = 0x00 */
> .set_freq = adis16400_set_freq,
> .get_freq = adis16400_get_freq,
> - .timeouts = &adis16300_timeouts,
> + .adis_data = ADIS16400_DATA(&adis16300_timeouts),
> },
> [ADIS16400] = {
> .channels = adis16400_channels,
> @@ -1060,7 +1112,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
> .temp_offset = 25000000 / 140000, /* 25 C = 0x00 */
> .set_freq = adis16400_set_freq,
> .get_freq = adis16400_get_freq,
> - .timeouts = &adis16400_timeouts,
> + .adis_data = ADIS16400_DATA(&adis16400_timeouts),
> },
> [ADIS16445] = {
> .channels = adis16445_channels,
> @@ -1074,7 +1126,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
> .temp_offset = 31000000 / 73860, /* 31 C = 0x00 */
> .set_freq = adis16334_set_freq,
> .get_freq = adis16334_get_freq,
> - .timeouts = &adis16445_timeouts,
> + .adis_data = ADIS16400_DATA(&adis16445_timeouts),
> },
> [ADIS16448] = {
> .channels = adis16448_channels,
> @@ -1088,7 +1140,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
> .temp_offset = 31000000 / 73860, /* 31 C = 0x00 */
> .set_freq = adis16334_set_freq,
> .get_freq = adis16334_get_freq,
> - .timeouts = &adis16448_timeouts,
> + .adis_data = ADIS16400_DATA(&adis16448_timeouts),
> }
> };
>
> @@ -1099,52 +1151,6 @@ static const struct iio_info adis16400_info = {
> .debugfs_reg_access = adis_debugfs_reg_access,
> };
>
> -static const char * const adis16400_status_error_msgs[] = {
> - [ADIS16400_DIAG_STAT_ZACCL_FAIL] = "Z-axis accelerometer self-test failure",
> - [ADIS16400_DIAG_STAT_YACCL_FAIL] = "Y-axis accelerometer self-test failure",
> - [ADIS16400_DIAG_STAT_XACCL_FAIL] = "X-axis accelerometer self-test failure",
> - [ADIS16400_DIAG_STAT_XGYRO_FAIL] = "X-axis gyroscope self-test failure",
> - [ADIS16400_DIAG_STAT_YGYRO_FAIL] = "Y-axis gyroscope self-test failure",
> - [ADIS16400_DIAG_STAT_ZGYRO_FAIL] = "Z-axis gyroscope self-test failure",
> - [ADIS16400_DIAG_STAT_ALARM2] = "Alarm 2 active",
> - [ADIS16400_DIAG_STAT_ALARM1] = "Alarm 1 active",
> - [ADIS16400_DIAG_STAT_FLASH_CHK] = "Flash checksum error",
> - [ADIS16400_DIAG_STAT_SELF_TEST] = "Self test error",
> - [ADIS16400_DIAG_STAT_OVERFLOW] = "Sensor overrange",
> - [ADIS16400_DIAG_STAT_SPI_FAIL] = "SPI failure",
> - [ADIS16400_DIAG_STAT_FLASH_UPT] = "Flash update failed",
> - [ADIS16400_DIAG_STAT_POWER_HIGH] = "Power supply above 5.25V",
> - [ADIS16400_DIAG_STAT_POWER_LOW] = "Power supply below 4.75V",
> -};
> -
> -static const struct adis_data adis16400_data = {
> - .msc_ctrl_reg = ADIS16400_MSC_CTRL,
> - .glob_cmd_reg = ADIS16400_GLOB_CMD,
> - .diag_stat_reg = ADIS16400_DIAG_STAT,
> -
> - .read_delay = 50,
> - .write_delay = 50,
> -
> - .self_test_mask = ADIS16400_MSC_CTRL_MEM_TEST,
> -
> - .status_error_msgs = adis16400_status_error_msgs,
> - .status_error_mask = BIT(ADIS16400_DIAG_STAT_ZACCL_FAIL) |
> - BIT(ADIS16400_DIAG_STAT_YACCL_FAIL) |
> - BIT(ADIS16400_DIAG_STAT_XACCL_FAIL) |
> - BIT(ADIS16400_DIAG_STAT_XGYRO_FAIL) |
> - BIT(ADIS16400_DIAG_STAT_YGYRO_FAIL) |
> - BIT(ADIS16400_DIAG_STAT_ZGYRO_FAIL) |
> - BIT(ADIS16400_DIAG_STAT_ALARM2) |
> - BIT(ADIS16400_DIAG_STAT_ALARM1) |
> - BIT(ADIS16400_DIAG_STAT_FLASH_CHK) |
> - BIT(ADIS16400_DIAG_STAT_SELF_TEST) |
> - BIT(ADIS16400_DIAG_STAT_OVERFLOW) |
> - BIT(ADIS16400_DIAG_STAT_SPI_FAIL) |
> - BIT(ADIS16400_DIAG_STAT_FLASH_UPT) |
> - BIT(ADIS16400_DIAG_STAT_POWER_HIGH) |
> - BIT(ADIS16400_DIAG_STAT_POWER_LOW),
> -};
> -
> static void adis16400_setup_chan_mask(struct adis16400_state *st)
> {
> const struct adis16400_chip_info *chip_info = st->variant;
> @@ -1158,23 +1164,6 @@ static void adis16400_setup_chan_mask(struct adis16400_state *st)
> st->avail_scan_mask[0] |= BIT(ch->scan_index);
> }
> }
> -
> -static struct adis_data *adis16400_adis_data_alloc(struct adis16400_state *st,
> - struct device *dev)
> -{
> - struct adis_data *data;
> -
> - data = devm_kmalloc(dev, sizeof(struct adis_data), GFP_KERNEL);
> - if (!data)
> - return ERR_PTR(-ENOMEM);
> -
> - memcpy(data, &adis16400_data, sizeof(*data));
> -
> - data->timeouts = st->variant->timeouts;
> -
> - return data;
> -}
> -
> static int adis16400_probe(struct spi_device *spi)
> {
> struct adis16400_state *st;
> @@ -1207,9 +1196,7 @@ static int adis16400_probe(struct spi_device *spi)
> st->adis.burst->extra_len = sizeof(u16);
> }
>
> - adis16400_data = adis16400_adis_data_alloc(st, &spi->dev);
> - if (IS_ERR(adis16400_data))
> - return PTR_ERR(adis16400_data);
> + adis16400_data = &st->variant->adis_data;
>
> ret = adis_init(&st->adis, indio_dev, spi, adis16400_data);
> if (ret)

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